A school teacher injured his back and had to wear a plaster cast around 
the upper part of his body. It fit under his shirt and was not noticeable 
at all. 
On the first day of the term, still with the cast under his shirt, he 
found himself assigned to the toughest students in school. Walking 
confidently into the rowdy classroom, he opened the window as wide as 
possible and then busied himself with desk work. 
When a strong breeze made his tie flap, he took the desk stapler and 
stapled the tie to his chest. 
Discipline was not a problem from that day forth!